[NO-TICKET] Remove unnecessary src/.eslintrc and frontend/src/.eslintrc

[nvms]

Description of change

We store our eslint configs in package.json and frontend/package.json, so we don't also need src/.eslintrc and frontend/src/.eslintrc. It is safe to remove these.

Further, on my machine at least, it confuses the eslint LSP (vscode-eslint-language-server) which apparently prioritizes the discovery of .eslintrc over a package.json configuration, discovers no configuration (because these files are empty) and therefore provides no diagnostics.

How to test

Make sure eslint still provides diagnostics in your editor.

Issue(s)

• https://jira.acf.gov/browse/TTAHUB-0

Checklists

Every PR

• Meets issue criteria
• JIRA ticket status updated
• Code is meaningfully tested
• Meets accessibility standards (WCAG 2.1 Levels A, AA)
• API Documentation updated
• Boundary diagram updated
• Logical Data Model updated
• Architectural Decision Records written for major infrastructure decisions
• UI review complete

Before merge to main

• OHS demo complete
• Ready to create production PR

Production Deploy

• Staging smoke test completed

After merge/deploy

• Update JIRA ticket status

[GarrettEHill]

Looks like this works now